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comparison mupdf-source/thirdparty/tesseract/src/ccmain/paramsd.h @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 ///////////////////////////////////////////////////////////////////////
2 // File: paramsd.h
3 // Description: Tesseract parameter editor
4 // Author: Joern Wanke
5 //
6 // (C) Copyright 2007, Google Inc.
7 // Licensed under the Apache License, Version 2.0 (the "License");
8 // you may not use this file except in compliance with the License.
9 // You may obtain a copy of the License at
10 // http://www.apache.org/licenses/LICENSE-2.0
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
16 //
17 ///////////////////////////////////////////////////////////////////////
18 //
19 // Tesseract parameter editor is used to edit all the parameters used
20 // within tesseract from the ui.
21 #ifndef TESSERACT_CCMAIN_PARAMSD_H_
22 #define TESSERACT_CCMAIN_PARAMSD_H_
23
24 #ifndef GRAPHICS_DISABLED
25
26 # include "elst.h" // for ELIST_ITERATOR, ELISTIZEH, ELIST_LINK
27 # include "scrollview.h" // for ScrollView (ptr only), SVEvent (ptr only)
28
29 namespace tesseract {
30
31 class SVMenuNode;
32
33 class BoolParam;
34 class DoubleParam;
35 class IntParam;
36 class StringParam;
37 class Tesseract;
38
39 // A list of all possible parameter types used.
40 enum ParamType { VT_INTEGER, VT_BOOLEAN, VT_STRING, VT_DOUBLE };
41
42 // A rather hackish helper structure which can take any kind of parameter input
43 // (defined by ParamType) and do a couple of common operations on them, like
44 // comparisond or getting its value. It is used in the context of the
45 // ParamsEditor as a bridge from the internal tesseract parameters to the
46 // ones displayed by the ScrollView server.
47 class ParamContent : public ELIST_LINK {
48 public:
49 // Compare two VC objects by their name.
50 static int Compare(const void *v1, const void *v2);
51
52 // Gets a VC object identified by its ID.
53 static ParamContent *GetParamContentById(int id);
54
55 // Constructors for the various ParamTypes.
56 ParamContent() = default;
57 explicit ParamContent(tesseract::StringParam *it);
58 explicit ParamContent(tesseract::IntParam *it);
59 explicit ParamContent(tesseract::BoolParam *it);
60 explicit ParamContent(tesseract::DoubleParam *it);
61
62 // Getters and Setters.
63 void SetValue(const char *val);
64 std::string GetValue() const;
65 const char *GetName() const;
66 const char *GetDescription() const;
67
68 int GetId() const {
69 return my_id_;
70 }
71 bool HasChanged() const {
72 return changed_;
73 }
74
75 private:
76 // The unique ID of this VC object.
77 int my_id_;
78 // Whether the parameter was changed_ and thus needs to be rewritten.
79 bool changed_ = false;
80 // The actual ParamType of this VC object.
81 ParamType param_type_;
82
83 union {
84 tesseract::StringParam *sIt;
85 tesseract::IntParam *iIt;
86 tesseract::BoolParam *bIt;
87 tesseract::DoubleParam *dIt;
88 };
89 };
90
91 ELISTIZEH(ParamContent)
92
93 // The parameters editor enables the user to edit all the parameters used within
94 // tesseract. It can be invoked on its own, but is supposed to be invoked by
95 // the program editor.
96 class ParamsEditor : public SVEventHandler {
97 public:
98 // Integrate the parameters editor as popupmenu into the existing scrollview
99 // window (usually the pg editor). If sv == null, create a new empty
100 // empty window and attach the parameter editor to that window (ugly).
101 explicit ParamsEditor(tesseract::Tesseract *, ScrollView *sv = nullptr);
102
103 // Event listener. Waits for SVET_POPUP events and processes them.
104 void Notify(const SVEvent *sve) override;
105
106 private:
107 // Gets the up to the first 3 prefixes from s (split by _).
108 // For example, tesseract_foo_bar will be split into tesseract,foo and bar.
109 void GetPrefixes(const char *s, std::string *level_one, std::string *level_two, std::string *level_three);
110
111 // Gets the first n words (split by _) and puts them in t.
112 // For example, tesseract_foo_bar with N=2 will yield tesseract_foo_.
113 void GetFirstWords(const char *s, // source string
114 int n, // number of words
115 char *t); // target string
116
117 // Find all editable parameters used within tesseract and create a
118 // SVMenuNode tree from it.
119 SVMenuNode *BuildListOfAllLeaves(tesseract::Tesseract *tess);
120
121 // Write all (changed_) parameters to a config file.
122 void WriteParams(char *filename, bool changes_only);
123
124 ScrollView *sv_window_;
125 };
126
127 } // namespace tesseract
128
129 #endif // !GRAPHICS_DISABLED
130 #endif // TESSERACT_CCMAIN_PARAMSD_H_